The World Naked Bike Ride, which started more than 12 years ago, is an unusual environmental protest against "car culture," the world’s dependence on oil and other non-renewable energy sources, and in defense of cyclists’ rights

The city-based rides have been multiplying each year with thousands of nude participants and evolving into events that feature artists, musicians and supporters, along with increasing public and media attention.

The number of World Naked Bike rides and riders globally varies from year to year. Currently, 70 cities in 20 countries are affiliated.